Slashdot Mirror
Are Folding Containers the Future of Shipping?
swellconvivialguy writes "Earlier this year Maersk ordered 20 super-size container ships—each to have '16 percent larger capacity than today's largest container vessel, Emma Maersk.' But instead of embracing the bigger/more-is-better mentality, Staxxon, a NJ-based startup, has engineered a folding steel container (it folds like a toddler's playpen), which is designed to make shipping more efficient by 'reducing the number of container ship movements.' No one has yet succeeded in the marketplace with a collapsible container, but Staxxon has made a point of learning from the mistakes of others."
Looks like a cool concept, though it looks like it takes much more human contact than regular shipping containers do (when being folded). This could be a problem, as a lot of the bigger shipping yards are automated and/or move containers around using large machines.
We'll have to see if the increase in human contact is worth the space saved when shipping empty containers around.
Or perhaps we could sell things to asia. If the containers going from the US to asia were not empty then there would be no need for them to fold.
You can't do that. Imbalances in amount of cargo going East vs West are inevitable because of trade imbalances, but Kirchoff's laws also apply to container ships: Every container ship going East must return West.
Say there are 5 container ships with containers full of cargo which travel from China to the U.S. On the return trip, say there's only one container ship's worth of cargo. So you load one container ship with cargo for the return trip. The containers from the other 4 ships you collapse and load onto a second ship. You've now loaded all the containers needed for the next 5 ships worth of cargo onto 2 ships heading back to China. Great! You've eliminated the need for 3 ships on the return leg, right? Wrong. Once those containers get back to China and are loaded up with cargo, you now have 5 ships worth of cargo containers, but only 2 ships to transport them. Those 3 ships you left in the U.S. have to make the return trip to China regardless of whether they're loaded or empty.
The number of container ship movements is dictated by the maximum amount of cargo traveling between two destinations one-way, not the minimum. The minimum is irrelevant since you need the empty containers and container ships to make the return trip anyway to ferry the next batch of cargo along the maximum one-way route. The only way you can reduce the number of container ship movements is to scrap the 3 container ships you left in the U.S., and replace them with 3 new ones built in China. That's just not economically feasible. You might be able to shaft some of the ship captains into having to make an empty trip back to China, but all that'll do is cause them to raise the price they charge for the next trip from China to the U.S. The net result is no reduction in container ship movements, and no reduction in fuel consumed, and no reduction in overall cost.
If you drew a Venn diagram of "news for nerds" and "stuff that matters", you know what would be at the intersection? That's right: folding shipping containers.
Do you even lift?
These aren't the 'roids you're looking for.
The way containerships are built now, empties are frequently used to balance the weight distribution of the vessel. Folding them up won't create more capacity because they aren't built with the expectation of being loaded to the brim with fully loaded containers, and condensing empties creates space but condenses weight. A containership taking on full loads will only hit about 70% of its slot capacity due to weight constraints.
Also, wear and tear on moving parts in the shipping industry should not be overlooked. Twist locks, the things that lock containers together on ships, are very simple mechanisms that are built with extreme robustness. Doesn't matter, they constantly break and have to be replaced during ship operations. This solution is much more suscpetible to breakage than twist locks.
The only thing these containers do is make trade lane management more fluid and make empty storage more efficient for shipping terminals/container yards, but at the cost of equipment maintenance, labor, and reliability. The costs won't offset the benefits until the worldwide port infastructure or shipping capacity is bursting at the seams (creating space issues and a premium on crane productivity). That simply isn't the case.
Good point. Seems they need to find a way to fold ships, too.
Similar to bikes, planes and (to some extent) cars.